Answer:
Add items to the box
Explanation: I did the test
The gravitational force will be one quarter.
The gravitational force between two objects is given by the formula
F=GMm/r^2
here, r is the distance between the objects.
Thus the gravitational force is inversely proportional to the square of the distance between the objects, Therefore if the distance between two objects is doubled the force will be one quarter.
Answer:
Input impedance of this transformer is 50 ohms.
Explanation:
Given that,
Number of turns in the primary coil, 
Number of turns in the secondary coil, 
Output impedance of the transformer, 
The number of turns and the impedance ratio in the step down transformer is given by :
So, the input impedance of this transformer is 50 ohms. Hence, this is the required solution.
Answer:
Gravity holds stars together and keeps us on the ground. The electromagnetic force ensures the stability of atoms and makes chemistry happen. The strong nuclear force holds the kernels of matter, atomic nuclei, together, and powers the burning of stars.
Explanation:
800 J is the work done by the student to lift the box of books.
Answer:
Explanation:
Work done is the measure of force required to move an object from one position to another. So it can be determined by the product of force and displacement of the object.
Work done to lift the box of books = Force acting on the box × Distance the box is lifted.
So here the displacement or the distance of the box being lifted is given as 4 m and the force acting on the box is given as 200 N.
Then, work done = 200 × 4 = 800 J.
So 800 J is the work done by the student to lift the box of books.
